'New Chapter': Panther Completes Winston Tailings Sampling

Why It Matters

The results unlock a potentially valuable resource in legacy tailings, positioning Panther to generate new revenue streams while demonstrating the economic viability of large‑scale tailings reprocessing in North America.

Key Takeaways

• Final assay confirms average 0.49 g/t gold in Winston tailings
• Sampling covered 100+ sites across 900 m × 300 m TSF
• Results will feed resource model and metallurgical design
• Panther moves to low‑cost engineering for tailings reprocessing permit
• Extrakt partnership targets commercial recovery of gold, silver, copper

Pulse Analysis

Tailings reprocessing has moved from niche projects to a mainstream strategy for extracting residual metals from historic mine waste. In Ontario, the provincial government introduced a dedicated mining‑recovery permit last year to streamline approvals for such operations, reflecting growing policy support for circular mining. Panther Metals’ Winston project is one of the most ambitious examples, sitting on a former copper‑zinc mine that left behind 3.3 Mt of processed ore. By targeting the stored tailings, the company aims to convert an environmental liability into a revenue‑generating asset.

The final vibracore campaign delivered 25 high‑resolution samples, revealing an average gold grade of 0.49 g/t and a range that peaks above 0.9 g/t. In addition to gold, the assays recorded significant silver, copper, zinc, cobalt, gallium and indium, underscoring the polymetallic nature of the waste. These consistent results provide the data needed for a robust mineral‑resource model and inform the design of a metallurgical circuit that can recover multiple commodities. Panther’s collaboration with ALS Laboratories and Bayside Geoscience ensures analytical rigor, bolstering confidence among investors and regulators.

With assay data in hand, Panther is entering a “new chapter” focused on low‑cost engineering design and the preparation of a mining‑recovery permit application, which it began filing in late 2025. The company’s partnership with Extrakt Process Solutions will pilot a proprietary leaching technology already proven at Fulcrum Metals’ Kirkland Lake tailings project, aiming to maximize metal recovery while keeping operating expenses modest. If successful, the Winston reprocessing plant could generate several million dollars of annual cash flow, set a benchmark for brownfield tailings projects, and accelerate the broader adoption of sustainable mining practices across North America.